To me the 40gr V-max is purely a varmint bullet GS and PD's, they are pretty fragile. The 40gr NBT is a whole different bullet and will stay together quite well, I usually find shrapnel and the bullet base against the hide on the far side of the coyote.
This is my experience also. I use the 40 NBT's for everything out of my 223's, it holds together and in my experience very accurate.
The 40's out of a 223 at 3750 - 3800 fps pretty much replicates the drift and drop out of 50 gr bullets in 22/250's which for a lot of years was the go-to coyote load for a lot of shooters.
drover
p.s. - they also work quite well on coyotes out of a 222.
